Question

What is the significance of the adoption of a standard gauge for all railroads?
A) It allowed all rails to be built of steel instead of inferior quality metal.
B) It allowed trains to travel on all tracks, thus integrating the entire system.
C) It kept all trains running to coordinate their schedules.
D) It allowed tracks to be built on both government and private lands.
E) It kept the trains from derailing so often and so disastrously.

Answer

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